Construction Crane
Inputs and outputs
Inputs
Gasoline or diesel is entered into the cranes engine so it can run. Cranes can also run by electric motor.
The crane operator uses their arms and legs to control levers and foot pedals that move the crane.
Outputs
The operator guides the crane to swivel, lift and lower large objects.
Dangers of cranes
People can be crushed by collapsing cranes or fallen loads.
Cranes can hit power lines or people can fall or be thrown off of them.
Between 2011 and 2015, 44 people died per year from crane-related accidents. https://www.bls.gov/iif/oshwc/cfoi/cranes_fact_sheet.htm
Uses of cranes
They can be used to build structures. These could be buildings, bridges and even roads in some cases.
They can be used to load and unload large cargo on and off ships or trains.